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John Allen (engineer)

John Allen (engineer) is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand John Allen (engineer) rather than just read about it. In short: John Edward Allen (born 6 December 1928, Devonport, England) is a British engineer and plasma physicist. In particular, he has directly contributed to international dusty plasma experiments in space under microgravity conditions.

Key takeaways

  • John Allen (engineer) belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect John Allen (engineer) to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of John Allen (engineer) from memory before moving on to harder problems.

Reference excerpt

John Edward Allen (born 6 December 1928, Devonport, England) is a British engineer and plasma physicist. In particular, he has directly contributed to international dusty plasma experiments in space under microgravity conditions.

Education Allen gained Bachelor of Engineering (1949), Doctor of Philosophy (1953), and Doctor of Engineering (1963) degrees from the University of Liverpool. His research included experiments with high-current spark discharges involving currents up to 265kA, the highest in any laboratory at the time. He also gained a Master of Arts degree (1964) at the University of Cambridge, and Master of Arts (1965) and Doctor of Science (1975) degrees at the University of Oxford.

Career During 1952–1958, Allen was a science officer and then senior science officer at the Atomic Energy Research Establishment (AERE, Harwell). From 1958–1964, he was a consultant and the Brazilian National Nuclear Energy Commission (CNEN) Laboratory and a professor at the University of Rome in Italy. During 1964–1965, he was an assistant director of research at the University of Cambridge at the invitation of the engineer W. R. Hawthorne. He spent the major portion of his career as a Fellow of University College, Oxford during 1965–1996 (31 years). He was a Reader (1990–1996) and then Emeritus Professor of Engineering Science from 1996 in the Department of Engineering Science at Oxford, when he became an Emeritus Fellow of University College. In 1991, he was editor of the book Gas Discharge Physics with the theoretical physicist Yuri Raizer. He has also been a Visiting Professor in Physics at Imperial College London.

Fellowships and awards Allen is a Fellow of the Institute of Physics (IoP), the former Institution of Electrical Engineers (IEE, now part of the Institution of Engineering and Technology), and the American Physical Society (APS). He is also a member of the Institute of Electrical and Electronics Engineers (IEEE) Nuclear and Plasma Society. In 2013, a special issue of the Journal of Physics D: Applied Physics was produced in honour of his 75th birthday. In 1998, Allen was awarded the IEE Achievement Medal for Science, Education and Technology. He was also awarded the Distinguished Scientist Award by the International Topical Conference on Plasma Science.

See also List of American Physical Society Fellows (1972–1997) (see 1989)

References

External links John Allen home page at the Mathematical Institute, University of Oxford John Allen M.A., Ph.D., D.Eng., D.Sc. Professor Emeritus at University of Oxford on ResearchGate

Worked examples

Example 1 — a first encounter with John Allen (engineer)

Start with the simplest possible case. Write down what John Allen (engineer) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to John Allen (engineer) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about John Allen (engineer) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of John Allen (engineer)

In research
John Allen (engineer) appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses John Allen (engineer) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
John Allen (engineer) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1928 births, Academic staff of the Sapienza University of Rome, Academics of Imperial College London, so understanding it makes those chapters shorter.
In everyday life
Look for John Allen (engineer) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study John Allen (engineer) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what John Allen (engineer) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain John Allen (engineer) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John Allen (engineer) in simple terms?

John Edward Allen (born 6 December 1928, Devonport, England) is a British engineer and plasma physicist. In particular, he has directly contributed to international dusty plasma experiments in space under microgravity conditions.

Why does John Allen (engineer) matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study John Allen (engineer)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on John Allen (engineer).

Tags

  • 1928 births
  • Academic staff of the Sapienza University of Rome
  • Academics of Imperial College London
  • Academics of the University of Cambridge
  • Alumni of the University of Liverpool
  • Engineers from Devonport, Plymouth
  • English engineer stubs
  • English plasma physicists
  • Fellows of University College, Oxford
  • Fellows of the American Physical Society
  • Fellows of the IEEE
  • Fellows of the Institute of Physics

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